The objective of this Official Mexican Standard is to establish the specifications to which the transport of
certain classes of hazardous substances and materials, packaged and/or packaged in limited quantities, must be subject. It will be necessary to carry out the modification of this Official Mexican Standard, since it
is essential to apply the specifications established herein, in order to align them with the 22nd Edition of
the Model Regulation for the Transport of Dangerous Goods of the United Nations Organization.